Nasal filter



FIG. 1 is a perspective view of a nasal filter.

FIG. 2 is a front elevational view of FIG. 1.

FIG. 3 is a side elevational view of FIG. 1.

FIG. 4 is a top elevational view of FIG. 1.

FIG. 5 is a bottom elevational view of FIG. 1.

FIG. 6 is an exploded view of FIG. 1; and,

FIG. 7 is a cross-sectional view taken along line 7-7 of FIG. 2. 

CLAIM We claim the ornamental design for a nasal filter, as shown and described. 